WO2022175238A1 - Alliage de laiton - Google Patents

Alliage de laiton Download PDF

Info

Publication number
WO2022175238A1
WO2022175238A1 PCT/EP2022/053611 EP2022053611W WO2022175238A1 WO 2022175238 A1 WO2022175238 A1 WO 2022175238A1 EP 2022053611 W EP2022053611 W EP 2022053611W WO 2022175238 A1 WO2022175238 A1 WO 2022175238A1
Authority
WO
WIPO (PCT)
Prior art keywords
brass alloy
amount
alloy according
alloy
brass
Prior art date
Application number
PCT/EP2022/053611
Other languages
German (de)
English (en)
Inventor
Norbert Gaag
Florian Seuss
Original Assignee
Diehl Metall Stiftung & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl Metall Stiftung & Co. Kg filed Critical Diehl Metall Stiftung & Co. Kg
Priority to CN202280009209.7A priority Critical patent/CN116745457A/zh
Priority to EP22707056.2A priority patent/EP4294956A1/fr
Publication of WO2022175238A1 publication Critical patent/WO2022175238A1/fr
Priority to US18/352,329 priority patent/US20240002980A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/04—Alloys based on copper with zinc as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Definitions

  • the invention relates to a brass alloy.
  • it relates to a brass alloy to which neither lead (Pb) nor bismuth (Bi) is added.
  • Such a brass alloy is known from EP 3320 122 B1.
  • the well-known brass alloy consists of 54 to 64% Cu and 36 to 46% Zn, the alloy having an In content of 0.005 to 1.0%, an addition of at least one of the components Fe, Sn, Ni or Mn totaling 0.01 up to 3.0%. Bi is not added to the alloy.
  • Pb was added in an amount of up to 4% by weight to improve the machinability of brass alloys.
  • the addition of Pb is severely restricted due to legal requirements, depending on the application.
  • EP 3320 122 B1 discloses a brass alloy to which neither Pb nor Bi is added. To improve machinability, it is proposed to add 0.005 to 1.0% In to the brass alloy. The proposed addition of In improves machinability. However, relatively long spiral chips are formed during machining, which can lead to blockages during removal and tool breakage.
  • the object of the invention is to eliminate the disadvantages of the prior art.
  • a brass alloy is to be specified whose machinability is improved.
  • the brass alloy should have low hot embrittlement, so that it can be processed by hot forming.
  • [%] means percent by weight.
  • At least one of the components Fe, Sn and Ni is contained in an amount of 0.05 to 0.4%, preferably in an amount of 0.1 to 0.3%.
  • the components Fe, Sn and Ni are particularly preferably contained in an amount of 0.1 to 0.3% each.
  • the proposed addition of Fe and Ni influences the grain growth of the alpha and beta mixed crystals. Sn stabilizes the beta mixed crystal. i.e.
  • the proportions of Fe, Sn and Ni can be used to adjust the ratio between the alpha and the beta mixed crystal or the alpha and beta phase.
  • the brass alloy contains Si in an amount of up to 0.01%. Si also has the effect of stabilizing the beta phase.
  • Mn is included in an amount of up to 0.2%. Mn also stabilizes the beta phase and, together with other elements, contributes to the formation of precipitates, which have a positive effect on the machining behavior.
  • the Zn content is 40 to 44%, preferably more than 41% and less than 43%.
  • a brass alloy with the proposed Zn content has relatively little Cu and, as a result, can be produced inexpensively.
  • the proposed brass alloy is characterized by very good machinability. It can be deformed by hot forming.
  • the brass alloy advantageously has a matrix of a beta mixed crystal with proportions of an alpha mixed crystal.
  • the proportion of alpha mixed crystal is advantageously at least 28%, preferably at least 30%.
  • the proposed brass alloy is characterized by a particularly favorable machining behavior.
  • the proposed brass alloy may also contain one or more of the following components: Sb and/or Cd and/or Se in an amount of up to 0.5% each. It has been shown that higher contents of Sb and/or Cd and/or Se have a negative effect on the properties of the brass alloy.
  • Ca and/or Mg in an amount of up to 1.0% each.
  • Ca and/or Mg contribute to the formation of precipitates in the mixed crystal. Such precipitates improve the machinability of the brass alloy.
  • P in an amount up to 0.1%.
  • P contributes to improved corrosion resistance of the brass alloy.
  • P counteracts dezincification.
  • Cr in an amount up to 0.2%. Cr can in turn contribute to the formation of precipitations in the mixed crystal, which improve the machinability of the brass alloy.
  • the structure of the reference alloy consists of a matrix of a beta mixed crystal with 39% alpha mixed crystal.
  • the microstructure of the alloy according to the invention consists of a matrix of a beta mixed crystal with 32% alpha mixed crystal. Machining tests were carried out both with the reference alloy and with the alloy according to the invention. The results obtained are evident from the figures. Show it:
  • Fig. 1 chips after a cutting test of the reference alloy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Adornments (AREA)
  • Powder Metallurgy (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

L'invention concerne un alliage de laiton comprenant de 54 à 64 % de Cu, de 0,05 à 0,15 % d'Al, de 0,005 à 0,5 % d'In, au moins l'un des composants Fe, Sn, Ni dans une quantité collective de 0,01 à 3,0 %, le reste étant du Zn et des impuretés inévitables.
PCT/EP2022/053611 2021-02-17 2022-02-15 Alliage de laiton WO2022175238A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280009209.7A CN116745457A (zh) 2021-02-17 2022-02-15 黄铜合金
EP22707056.2A EP4294956A1 (fr) 2021-02-17 2022-02-15 Alliage de laiton
US18/352,329 US20240002980A1 (en) 2021-02-17 2023-07-14 Brass alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021103686.0 2021-02-17
DE102021103686.0A DE102021103686A1 (de) 2021-02-17 2021-02-17 Messinglegierung

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US18/352,329 Continuation US20240002980A1 (en) 2021-02-17 2023-07-14 Brass alloy

Publications (1)

Publication Number Publication Date
WO2022175238A1 true WO2022175238A1 (fr) 2022-08-25

Family

ID=80623420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/053611 WO2022175238A1 (fr) 2021-02-17 2022-02-15 Alliage de laiton

Country Status (5)

Country Link
US (1) US20240002980A1 (fr)
EP (1) EP4294956A1 (fr)
CN (1) CN116745457A (fr)
DE (1) DE102021103686A1 (fr)
WO (1) WO2022175238A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011067682A1 (fr) * 2009-12-03 2011-06-09 Elsan Hammadde Sanayi Anonim Sirketi Alliage de laiton à faible teneur en plomb
EP3320122B1 (fr) 2015-07-10 2020-08-12 Aurubis Stolberg GmbH & Co. KG Alliage de laiton

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI591192B (zh) 2011-08-13 2017-07-11 Wieland-Werke Ag Copper alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011067682A1 (fr) * 2009-12-03 2011-06-09 Elsan Hammadde Sanayi Anonim Sirketi Alliage de laiton à faible teneur en plomb
EP3320122B1 (fr) 2015-07-10 2020-08-12 Aurubis Stolberg GmbH & Co. KG Alliage de laiton

Also Published As

Publication number Publication date
EP4294956A1 (fr) 2023-12-27
US20240002980A1 (en) 2024-01-04
DE102021103686A1 (de) 2022-08-18
CN116745457A (zh) 2023-09-12

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